CVE-2026-109662 Frappe ERPNext before 15.112.0 Stored XSS via Public Portal Form
Unauthenticated attackers can inject malicious scripts into public portal forms, executing code in staff browsers to potentially steal data or hijack sessions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-109662?
CVE-2026-109662 is a medium-severity cross-site scripting vulnerability in frappe erpnext, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Frappe ERPNext before 15.112.0 and 16.x before 16.23.0 contains a stored cross-site scripting vulnerability in a public portal form that accepts unauthenticated submissions and stores content later rendered with insufficient neutralisation. Unauthenticated attackers can submit crafted markup that executes in the browser sessions of staff who review the stored record.
Weakness: CWE-79
Which versions are affected by CVE-2026-109662?
How do I fix CVE-2026-109662?
No fix has been published for CVE-2026-109662 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-109662 being exploited?
There is no known exploitation of CVE-2026-109662 in the wild and no public exploit code.
Sources
Also known as GHSA-4rfh-2hfg-9m7w, GHSA-hv86-v32f-rvgp.